The 75 Hard Challenge is trending on TikTok, but is this fitness challenge by Andy Frisella actually healthy? Here s what experts have to say about the 75 Hard Rules, plus what you can try instead.
For many people aiming to burn a lot of calories, high-intensity interval training is the way to go. But there are three other forms of interval training that may be
Try this interval workout to avoid HIIT burnout or injuries localnews8.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from localnews8.com Daily Mail and Mail on Sunday newspapers.